2-4/0 AWG Flexible Dual Wall Adhesive-lined Heat Shrink Tubing 3:1 1″ ID 12″ Inch 4 or 8 Pack

This 1″ ID 3:1 dual wall adhesive-lined heat shrink tubing provides heavy-duty environmental sealing and insulation for 2–4/0 AWG wire in automotive, marine, and industrial applications. The flexible polyolefin outer layer and internal thermoplastic adhesive form a watertight, corrosion-resistant barrier when heated—ideal for protecting high-amperage splices and connections exposed to moisture, vibration, or chemicals.

Specifications & Features

• Wire Compatibility: 2–4/0 AWG
• Shrink Ratio: 3:1
• Pre-shrink Inner Diameter: 1″
• Recovered Inner Diameter: 0.320″
• Wall Type: Dual wall with heat-activated adhesive lining
• Material: Flame-retardant polyolefin outer layer
• Length: 12″ per piece
• Available Colors: Black, Red, Clear
• Adhesive lining seals out moisture, oil, and contaminants
• Highly flexible for routing over irregular or bulky cable junctions
• Commonly used in marine wiring, battery cables, and high-current harnesses